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How many ViewState objects can be created on an aspx page ?

Posted By :Virendra Dugar     Posted Date :December 10, 2009    Points :10   Category :ASP.Net 
There is no limit. You can have any number of ViewState object on single aspx page. However more Viewstate objects, more slowly it loads.

You can also find related Interview Question to How many ViewState objects can be created on an aspx page ?  below: 

When during the page processing cycle is ViewState available?

  
After the Init() and before the Page_Load(), or OnLoad() for a control. (More...)

Does ViewState is responsible for maintaining data across the Page Post Back for Postback controls (like textbox, dropdownlist) and non-postbackcontrols(like label)?

  
It is false. For NonPostback controls it is true but for postback controls, ASP.NET retrieves their values one by one from the HTTP request and copies them to the control values while creating the HTTP response. (More...)

When during the page processing cycle is ViewState available?

  
The view state is available after the Init() and before the Render() methods are called during Page load. (More...)

When during the page processing cycle is ViewState available?

  
After the Init() and before the Page_Load(), or OnLoad() for a control. (More...)

Is it possible to share session information among ASP and ASPX page?

  
No,it is not possible as both of these are running under different processes. (More...)

What does the EnableViewStateMac setting in an aspx page do?

  
EnableViewStateMac setting is a security measure in ASP.Net. It ensures the view state for a page not to tamper. To to so " EnableViewStateMac=true "is used. ASP.net detects the change in the value of view state sent to the browser when Postback action takes place and raises an error - "Validation of view state MAC failed". (More...)

What is the difference between ViewState,Application and Session of a Page?

  
View State:

- View state is maintained in page level only.
- View state of one page is not visible in another page.
- View state information stored in client only.
- View state persist the values of particular page in the client (browser) when post back operation done.
- View state used to persist page-instance-specific data. (Read more)

Session State:

- Session state is maintained in session level.
- Session state value is available in all pages within a user session.
- Session state information stored in server.
- Session state persist the data of particular user in the server. This data available till user close the browser or session time completes.
- Session state used to persist the user-specific data on the server side. (Read more)

Application State

ApplicationState is a variable you can store values in during the life off the application (may get cycled periodically, and without your knowledge) (used less-frequently)


Usage

- If you want to access the information on different web pages, you can use SessionState
- If you want to access from the same page, then you can use Viewstate
-Application State it's global, for all users

Security

Session state provides more security when compared with view state as the data value is stored in server side (More...)

When during the page processing cycle is ViewState available?

  
After the Init() and before the Page_Load(), or OnLoad() for a control. (More...)

Is it true that COM objects no longer need to be registered on the server?

  
Yes and No. Legacy COM objects still need to be registered on the server before they can be used. COM developed using the new .NET Framework will not need to be registered. Developers will be able to auto-register these objects just by placing them in the 'bin' folder of the application. (More...)

What is the difference between ViewState and SessionState?

  
ViewState persist the values of controls of particular page in the client when post back operation done. When user requests another page previous page data no longer available.

SessionState persist the data of particular user in the server. This data available till user close the browser or session time completes. (More...)

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